Look for EVAP Leaks
This bulletin applies to 2015 Dodge Durango and Jeep Grand Cherokee vehicles. The customer may see the MIL on while driving. The technician may find DTC P0455 (EVAP system large leak) or P0456 (EVAP system small leak) in the PCM memory.
Inspect the purge valve hose for any splits and replace with a new hose if damage is found. The purge valve hose for a 5.7L engine is P/N 68189065AD. The hose for a 3.6L engine is 68189075AE.